How do Creationist Christians respond to the evidence for Evolution?Just thought I should add this, but Carbon 14 is one of 5-10 different isotopes we happen to use for radiometric dating, and all of the measures with a whole range of half lives line up almost perfectly with one another to agree on the Earth being ~4.5bn years old, or the universe being ~13bn years old. As for the rate changing over time, to change enough for the world to be 6000-10000 years old would, by E=mc^2, make our universe billions of degrees hotter than it is.